Patents by Inventor Hyeong Choi
Hyeong Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9087238Abstract: The present invention relates to an iris recognition device and method capable of improving iris recognition accuracy. To enhance iris recognition accuracy in consideration of variation in pupil size and iris region due to changes in intensity of lighting, the iris recognition device and method are configured to obtain multiple iris images having different iris sizes by capturing iris images of a person to be enrolled with a camera while adjusting brightness of lighting so that the iris size of the person to be enrolled varies from a maximum size to a minimum size, store the obtained iris images and associated iris size information for enrollment in a database interworking with the iris recognition device, and select enrolled iris images having an iris size most similar to that of an iris image captured by the camera for identification among many enrolled iris images for similarity measurement.Type: GrantFiled: January 22, 2010Date of Patent: July 21, 2015Assignee: Iritech Inc.Inventors: Hyeong In Choi, Dae Hoon Kim, Jung Kyo Sohn, Song Hwa Kwon, Sung Jin Lee, Hwan Pyo Moon, Seung Min Paik
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Publication number: 20150040212Abstract: The present invention relates to a locking apparatus with enhanced security using an iris image, wherein, if a terminal including a short-range wireless communication means and camera accesses the locking apparatus, the locking apparatus: transmits, a token comprising at least one of identification number and/or random number of the locking apparatus from a token generator mounted on the locking apparatus, to the terminal; requests an iris image be photographed and transmitted within a preset time period; generates an iris template from the iris image photographed by a camera fixed on the user terminal; encrypts and transmits the generated iris template and the token from the terminal to the locking apparatus using short-range wireless communication; and performs at least one of access permission (lock release), access denial (a maintenance of a locked state), a request for re-photographing, and an emergency alarm by decrypting the received encrypted iris template and token using a decoder mounted on the lockType: ApplicationFiled: November 16, 2011Publication date: February 5, 2015Inventors: Dae-hoon Kim, Hyeong-in Choi, Nam-Sook Wee, Doo-Seok Lee, Jung-Kyo Sohn
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Publication number: 20140250517Abstract: The present invention relates to an authentication method and device using a single-use password generated from iris image information. The device comprises: a terminal and a server storing, in respective memories thereof, the iris image information for authentication; a camera attached to and installed on the device to capture the iris image information for authentication; the terminal, which generates the single-use password from the iris image information acquired through the camera, and transmits the single-use password to the server; and the server, which has a built-in algorithm for comparing and determining whether or not the single-use password transmitted from the terminal matches single-use password stored in the server.Type: ApplicationFiled: August 23, 2011Publication date: September 4, 2014Inventors: Dae-hoon Kim, Hyeong-in Choi, Tuyen Nguyen, Dung Pham
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Publication number: 20130233010Abstract: Provided is a driving device for an automatic ice-making machine, the driving device including: a cam gear that rotates a tray; and an operating lever that organically operates along a cam plane for an ice-cube quantity detecting arm formed at the cam gear and allows the ice-cube quantity detecting arm to rotate downward into an ice-cube storage bin, wherein a cam groove for the ice-cube quantity detecting arm is formed in the cam plane for the ice-cube quantity detecting arm of the cam gear and allows the operating level to descend so that the ice-cube quantity detecting arm rotates downward into the ice-cube storage bin, and a protrusion is formed between the cam plane for the ice-cube quantity detecting arm and the cam groove for the ice-cube quantity detecting arm and allows the operating lever to ascend so that the ice-cube quantity detecting arm that rotates downward into the ice-cube storage bin rotates upward.Type: ApplicationFiled: March 8, 2013Publication date: September 12, 2013Applicant: SCD CO., LTD.Inventor: Jae Hyeong CHOI
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Publication number: 20130194407Abstract: The present invention relates to a method and apparatus for iris recognition using multiple iris templates registered for each individual. The method include acquiring at least one or two eye images of a person to be registered; generating an iris template group for registration from the at least one or two eye images, and storing and registering the iris template group in a database; photographing an eye of the person using a camera placed on a front side of an iris recognition apparatus multiple times to acquire multiple images for authentication; generating an iris template group for authentication comprising multiple iris templates from the multiple eye images; comparing the iris template group for authentication with the registered iris template group for each registered person stored in the database; and performing authentication or identification using the comparison result.Type: ApplicationFiled: May 31, 2010Publication date: August 1, 2013Inventors: Dae-hoon Kim, Hyeong-in Choi, Nam-sook Wee, Doo-seok Lee, Jung-kyo Sohn, Vladimir Novik
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Patent number: 8433105Abstract: The present invention provides a method for acquiring region-of-interest and/or cognitive information from an eye image, comprising the steps of: preprocessing, standardizing, and coding the group of eye images for region-of-interest information or cognitive information to create eye image codes and to build a characteristic eye library in a memory in order to improve an iris recognition rate; grouping and partitioning or covering eye codes for eye images stored in the characteristic eye library into a plurality of groups, and obtaining a representative eye code of each of the eye code groups, preprocessing, standardizing, and coding a new eye image not assigned region-of-interest information or cognitive information in the same way as the above-described step to create a test eye code, matching the test eye image to the most similar eye image in the characteristic eye library, and transferring the region-of-interest information or cognitive information assigned to the matched eye image to the test eye image.Type: GrantFiled: October 6, 2009Date of Patent: April 30, 2013Assignee: Iritech Inc.Inventors: Hyeong In Choi, Dae Hoon Kim, Sung Jin Lee, Hwan Pyo Moon, Seung Min Paik, Song Hwa Kwon, Jung Kyo Sohn
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Publication number: 20130063582Abstract: The present invention relates to an iris recognition device and method capable of improving iris recognition accuracy. To enhance iris recognition accuracy in consideration of variation in pupil size and iris region due to changes in intensity of lighting, the iris recognition device and method are configured to obtain multiple iris images having different iris sizes by capturing iris images of a person to be enrolled with a camera while adjusting brightness of lighting so that the iris size of the person to be enrolled varies from a maximum size to a minimum size, store the obtained iris images and associated iris size information for enrollment in a database interworking with the iris recognition device, and select enrolled iris images having an iris size most similar to that of an iris image captured by the camera for identification among many enrolled iris images for similarity measurement.Type: ApplicationFiled: January 22, 2010Publication date: March 14, 2013Inventors: Hyeong In Choi, Dae Hoon Kim, Jung Kyo Sohn, Song Hwa Kwon, Sung Jin Lee, Hwan Pyo Moon, Seung Min Paik
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Publication number: 20130007081Abstract: A data processing which includes a conversion circuit and a pseudo random number generator including a series connection of plural shift registers. The conversion circuit receives a pseudo random number sequence from an output of one of the plural shift registers excluding a last shift register of the series connection, and converts first data to second data using the received pseudo random number sequence.Type: ApplicationFiled: June 29, 2012Publication date: January 3, 2013Inventors: KI JUN LEE, JUN JIN KONG, YONG JUNE KIM, JAE HONG KIM, HONG RAK SON, JUNG SOO CHUNG, SEONG HYEONG CHOI
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Publication number: 20120062720Abstract: The present invention provides a method for acquiring high quality eye images, comprising the steps of: dividing a camera mode for eye image acquisition into a pre-photographing mode and a main photographing mode, comparing the degree of eye capture, actual eye, resolution, contrast ratio, noise level, angle of the face when an object to be photographed stares at a lens, location of the pupil in the eye, and the degree of exposure of the iris in the eye, etc.Type: ApplicationFiled: December 11, 2009Publication date: March 15, 2012Inventors: Hyeong In Choi, Dae Hoo Kim, Sung Jin Lee, Hwan Pyo Moon, Song Hwa Kwon, Seung Min Paik, Jung Kyo Sohn
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Publication number: 20110320689Abstract: Methods of operating integrated circuit devices include updating a mapping table with physical address information by reading forward link information from a plurality of spare sectors in a corresponding plurality of pages within a nonvolatile memory device and then writing mapping table information derived from the forward link information into the mapping table. This forward link information may be configured as absolute address information (e.g., next physical address) and/or relative address information (e.g., change in physical address). This updating of the mapping table may include updating a mapping table within a volatile memory, in response to a resumption of power within the integrated circuit device. This resumption of power may follow a power failure during which the contents of the volatile memory are lost.Type: ApplicationFiled: June 13, 2011Publication date: December 29, 2011Inventors: Kyoung Lae Cho, Jun-jin Kong, Hong-rak Son, Seong-hyeong Choi
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Patent number: 8009876Abstract: An iris identification method and system, which divide an iris image, which is acquired for personal identification, into a plurality of equal/unequal and multiscale regions, generate a corresponding code corresponding to the respective regions, organizing codes into a database, generate a code at the time of authentication in the same manner, and identify a person by comparing this code with the codes stored in the database, thus improving identification speed and rate.Type: GrantFiled: September 13, 2005Date of Patent: August 30, 2011Assignee: Iritech Inc.Inventors: Daehoon Kim, Nam-Sook Wee, Song-Hwa Kwon, Sung Jin Lee, Hyeong In Choi
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Publication number: 20110194738Abstract: The present invention provides a method for acquiring region-of-interest and/or cognitive information from an eye image, comprising the steps of: preprocessing, standardizing, and coding the group of eye images for region-of-interest information or cognitive information to create eye image codes and to build a characteristic eye library in a memory in order to improve an iris recognition rate; grouping and partitioning or covering eye codes for eye images stored in the characteristic eye library into a plurality of groups, and obtaining a representative eye code of each of the eye code groups, preprocessing, standardizing, and coding a new eye image not assigned region-of-interest information or cognitive information in the same way as the above-described step to create a test eye code, matching the test eye image to the most similar eye image in the characteristic eye library, and transferring the region-of-interest information or cognitive information assigned to the matched eye image to the test eye image.Type: ApplicationFiled: October 6, 2009Publication date: August 11, 2011Inventors: Hyeong In Choi, Dae Hoon Kim, Sung Jin Lee, Hwan Pyo Moon, Seung Min Paik, Song Hwa Kwon, Jung Kyo Sohn
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Publication number: 20100182456Abstract: The present invention relates to a method of storing and restoring an iris image, the method comprising the steps of: acquiring an original image Iori including an iris portion from a camera; acquiring a first image Iextract1 configured with an area removed of portions outside of an outer circle and images included within an inner circle (hereinafter, referred to as an ‘iris enveloping annulus’) in order to extract an iris image to be stored from the original image; acquiring a second image Iextract2 removed of an occlusion portion of the iris, such as a pupil, a white of an eye, an eyelash, an eyelid, hairs, and the like, from the first image; converting the second image Iextract2 removed of the occlusion portion into a polar image Ipolar of a polar coordinate system, or acquiring a compressed image Icomp compressing the converted polar image; storing the compressed image Icomp in memory, together with restoration information H, as storage image data Istore; and acquiring a restored image Irestored using a rType: ApplicationFiled: September 5, 2008Publication date: July 22, 2010Inventors: Dae Hoon Kim, Hyeong In Choi, Seung Min Paik, Jung Kyo Sohn, Yang Hyeong Park
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Publication number: 20090169064Abstract: The present invention relates to an iris identification method and system, which divide an iris image, which is acquired for personal identification, into a plurality of equal/unequal and multiscale regions, generate a corresponding code corresponding to the respective regions, organizing codes into a database, generate a code at the time of authentication in the same manner, and identify a person by comparing this code with the codes stored in the database, thus improving identification speed and rate.Type: ApplicationFiled: September 13, 2005Publication date: July 2, 2009Applicant: Iritech Inc.Inventors: Daehoon Kim, Nam-Sook Wee, Song-Hwa Kwon, Sung Jin Lee, Hyeong In choi
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Publication number: 20070269532Abstract: Disclosed herein is a natural oriental medicinal composition for the promotion of hair growth. The oriental medicinal composition comprises a black bean extract, a tangerine extract, a potato extract, a pine needle extract and a quartzite powder. Since the oriental medicinal composition comprises crude drugs extracted from natural substances that can prevent hair loss, it is effective for hair growth and has ensured biostability. Particularly, the oriental medicinal composition allows newborn hair to grow in the form of stiff hair.Type: ApplicationFiled: March 21, 2007Publication date: November 22, 2007Inventor: HYEONG CHOI
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Publication number: 20070126215Abstract: The present invention relates to an A-pillar mounting structure of a curtain airbag. In particular, an A-pillar mounting structure in which an upper mounting member of a boss of an A-pillar trim is separated from the during deployment of an airbag and the trim separated from the A-pillar is prevented from going far away by a cap that is prevented from being scattered by a cap scattering preventing means connected to a mounting member or a trim connecting means. The present invention relates to an A-pillar mounting structure. in which a curtain airbag is installed and to which an A-pillar trim is coupled. The A-pillar trim includes an A-pillar trim boss for connecting the A-pillar trim to an A-pillar, and an upper mounting member provided to an upper end of the A-pillar trim boss and formed to be separable from the A-pillar trim boss during deployment of the curtain airbag.Type: ApplicationFiled: October 3, 2006Publication date: June 7, 2007Inventor: Hyeong Choi
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Progressively renderable outline font and methods of generating, transmitting and rendering the same
Patent number: 6232987Abstract: This invention relates to an outline font, and more particularly to a progressive renderable outline font and methods for transforming and rendering the same. Its purpose lies in supplying a progressively renderable Font which can be varied according to the quantity of the data composing the font. The Progressively Renderable Font has the function of controlling the display speed and the quality of the font. For example, if the hardware speed is relatively slow and a high quality font is not needed, only a part of the font data will be transmitted and displayed. On the contrary, if the hardware speed is relatively fast and high quality font is needed, gradually increased data will be transmitted and displayed. Therefore, a font can be transmitted and displayed using minimal data without sacrificing quality. On the other hand, in case of the environment, all the data can be transmitted and displayed so that the quality of the font can be fully realized.Type: GrantFiled: March 31, 1997Date of Patent: May 15, 2001Assignee: Hyundai Electronics Industries Co., Ltd.Inventors: Hyeong In Choi, Nam Sook Wee, Kyung Hwan Park, Sung Jin Lee, Sung Woo Choi, Hwan Pyo Moon, Seung Won Song -
Patent number: 6157750Abstract: The present invention relates to an outline font. The purpose lies in supplying a transforming and rendering method in the shape where the important form of the shape, such as the thickness of the stroke, will be maintained from the basic shape, and at the same time the whole size of the shape can be fitted into a given bounding box. The present invention supplies the transformation method of a handwriting font including searching for the medial axis of a given element, obtaining contact points by using maximal inscribed circles with the medial axis and points of the medial axis as a center, and applying the information about the medial axis points and the contact points in case of a transformation of the element in the transformation method of handwriting where a given element can be optionally transformed in sizes in order to achieve the purpose. The present invention enables the transformation of the shape.Type: GrantFiled: March 31, 1997Date of Patent: December 5, 2000Assignees: Hyundai Electronics Industries Co., Ltd., Hyundai Media Systems Co., Ltd., Hyeong In ChoiInventors: Hyeong In Choi, Nam Sook Wee, Kyung Hwan Park, Sung Jin Lee, Sung Woo Choi, Hwan Pyo Moon, Seung Won Song, Myung Joo Baek, Jin Young Kim, Shin Hae Tahk, Hyun Joo Choi, Hal Lan Yang, Jeong Han Kim
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Patent number: 4763045Abstract: An apparatus for the generation of ignition power and its circuits is composed of two transformers and one discharging capacitor. The triggering signal is taken from the alternating current supply voltage. The stored charge is discharged through a primary winding of a step-up transformer. The secondary voltage is stepped up to several ten thousand peak volts which is enough to make an ignition spark through a large air gap. The first half wave of alternating current power charges the capacitor and the second half wave triggers an SCR to discharge the capacitor. The charging and discharging are completed during a single period of a line power wave.Type: GrantFiled: May 4, 1987Date of Patent: August 9, 1988Assignee: Bang H. MOInventors: Hyeong In Choi, Keh-Kun Choi